[r14640]: inkscape / trunk / src / event-log.cpp Maximize Restore History

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event-log.cpp    339 lines (258 with data), 10.5 kB

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/*
* Author:
* Gustav Broberg <broberg@kth.se>
*
* Copyright (c) 2006 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <glibmm/i18n.h>
#include "desktop.h"
#include "event-log.h"
#include "inkscape.h"
#include "util/ucompose.hpp"
namespace Inkscape {
EventLog::EventLog(SPDocument* document) :
UndoStackObserver(),
_connected (false),
_document (document),
_event_list_store (Gtk::TreeStore::create(_columns)),
_event_list_selection (NULL),
_event_list_view (NULL),
_curr_event_parent (NULL),
_notifications_blocked (false),
_callback_connections (NULL)
{
// add initial pseudo event
Gtk::TreeRow curr_row = *(_event_list_store->append());
_curr_event = _last_event = curr_row;
curr_row[_columns.description] = _("[Unchanged]");
curr_row[_columns.type] = SP_VERB_FILE_NEW;
}
EventLog::~EventLog() { }
void
EventLog::notifyUndoEvent(Event* log)
{
if ( !_notifications_blocked ) {
// make sure the supplied event matches the next undoable event
g_return_if_fail ( _getUndoEvent() && (*(_getUndoEvent()))[_columns.event] == log );
// if we're on the first child event...
if ( _curr_event->parent() &&
_curr_event == _curr_event->parent()->children().begin() )
{
// ...back up to the parent
_curr_event = _curr_event->parent();
_curr_event_parent = (iterator)NULL;
} else {
// if we're about to leave a branch, collapse it
if ( !_curr_event->children().empty() && _connected ) {
(*_callback_connections)[CALLB_COLLAPSE].block();
_event_list_view->collapse_row(_event_list_store->get_path(_curr_event));
(*_callback_connections)[CALLB_COLLAPSE].block(false);
}
--_curr_event;
// if we're entering a branch, move to the end of it
if (!_curr_event->children().empty()) {
_curr_event_parent = _curr_event;
_curr_event = _curr_event->children().end();
--_curr_event;
}
}
// update the view
if (_connected) {
(*_callback_connections)[CALLB_SELECTION_CHANGE].block();
(*_callback_connections)[CALLB_EXPAND].block();
Gtk::TreePath curr_path = _event_list_store->get_path(_curr_event);
_event_list_view->expand_to_path(curr_path);
_event_list_selection->select(curr_path);
_event_list_view->scroll_to_row(curr_path);
(*_callback_connections)[CALLB_EXPAND].block(false);
(*_callback_connections)[CALLB_SELECTION_CHANGE].block(false);
}
updateUndoVerbs();
}
}
void
EventLog::notifyRedoEvent(Event* log)
{
if ( !_notifications_blocked ) {
// make sure the supplied event matches the next redoable event
g_return_if_fail ( _getRedoEvent() && (*(_getRedoEvent()))[_columns.event] == log );
// if we're on a parent event...
if ( !_curr_event->children().empty() ) {
// ...move to its first child
_curr_event_parent = _curr_event;
_curr_event = _curr_event->children().begin();
} else {
++_curr_event;
// if we are about to leave a branch...
if ( _curr_event->parent() &&
_curr_event == _curr_event->parent()->children().end() )
{
// ...collapse it
if (_connected) {
(*_callback_connections)[CALLB_SELECTION_CHANGE].block();
(*_callback_connections)[CALLB_COLLAPSE].block();
_event_list_view->collapse_row(_event_list_store->get_path(_curr_event->parent()));
(*_callback_connections)[CALLB_COLLAPSE].block(false);
(*_callback_connections)[CALLB_SELECTION_CHANGE].block(false);
}
// ...and move to the next event at parent level
_curr_event = _curr_event->parent();
_curr_event_parent = (iterator)NULL;
++_curr_event;
}
}
// update the view
if (_connected) {
Gtk::TreePath curr_path = _event_list_store->get_path(_curr_event);
(*_callback_connections)[CALLB_SELECTION_CHANGE].block();
(*_callback_connections)[CALLB_EXPAND].block();
_event_list_view->expand_to_path(curr_path);
_event_list_selection->select(curr_path);
_event_list_view->scroll_to_row(curr_path);
(*_callback_connections)[CALLB_EXPAND].block(false);
(*_callback_connections)[CALLB_SELECTION_CHANGE].block(false);
}
updateUndoVerbs();
}
}
void
EventLog::notifyUndoCommitEvent(Event* log)
{
// If we're not at the last event in list then erase the previously undone events
if ( _last_event != _curr_event ) {
_last_event = _curr_event;
if ( !_last_event->children().empty() ) {
_last_event = _last_event->children().begin();
} else {
++_last_event;
}
while ( _last_event != _event_list_store->children().end() ) {
if (_last_event->parent()) {
while ( _last_event != _last_event->parent()->children().end() ) {
_last_event = _event_list_store->erase(_last_event);
}
_last_event = _last_event->parent();
(*_last_event)[_columns.child_count] = _last_event->children().size() + 1;
++_last_event;
} else {
_last_event = _event_list_store->erase(_last_event);
}
}
}
const unsigned int event_type = log->type;
Gtk::TreeRow curr_row;
// if the new event is of the same type as the previous then create a new branch
if ( event_type == (*_curr_event)[_columns.type] ) {
if ( !_curr_event_parent ) {
_curr_event_parent = _curr_event;
}
curr_row = *(_event_list_store->append(_curr_event_parent->children()));
(*_curr_event_parent)[_columns.child_count] = _curr_event_parent->children().size() + 1;
} else {
curr_row = *(_event_list_store->append());
curr_row[_columns.child_count] = 1;
_curr_event = _last_event = curr_row;
// collapse if we're leaving a branch
if (_curr_event_parent && _connected) {
(*_callback_connections)[CALLB_COLLAPSE].block();
_event_list_view->collapse_row(_event_list_store->get_path(_curr_event_parent));
(*_callback_connections)[CALLB_COLLAPSE].block(false);
}
_curr_event_parent = (iterator)(NULL);
}
_curr_event = _last_event = curr_row;
curr_row[_columns.event] = log;
curr_row[_columns.type] = event_type;
curr_row[_columns.description] = log->description;
// update the view
if (_connected) {
Gtk::TreePath curr_path = _event_list_store->get_path(_curr_event);
(*_callback_connections)[CALLB_SELECTION_CHANGE].block();
(*_callback_connections)[CALLB_EXPAND].block();
_event_list_view->expand_to_path(curr_path);
_event_list_selection->select(curr_path);
_event_list_view->scroll_to_row(curr_path);
(*_callback_connections)[CALLB_EXPAND].block(false);
(*_callback_connections)[CALLB_SELECTION_CHANGE].block(false);
}
updateUndoVerbs();
}
void
EventLog::connectWithDialog(Gtk::TreeView *event_list_view, CallbackMap *callback_connections)
{
_event_list_view = event_list_view;
_event_list_selection = event_list_view->get_selection();
_event_list_selection->set_mode(Gtk::SELECTION_SINGLE);
_callback_connections = callback_connections;
(*_callback_connections)[CALLB_SELECTION_CHANGE].block();
(*_callback_connections)[CALLB_EXPAND].block();
_event_list_view->expand_to_path(_event_list_store->get_path(_curr_event));
_event_list_selection->select(_curr_event);
(*_callback_connections)[CALLB_EXPAND].block(false);
(*_callback_connections)[CALLB_SELECTION_CHANGE].block(false);
_connected = true;
}
void
EventLog::updateUndoVerbs()
{
if(_document) {
if(_getUndoEvent()) {
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->sensitive(_document, true);
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->name(_document, String::ucompose("%1: %2",
Glib::ustring(_("_Undo")),
Glib::ustring((*_getUndoEvent())[_columns.description])));
} else {
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->name(_document, _("_Undo"));
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->sensitive(_document, false);
}
if(_getRedoEvent()) {
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->sensitive(_document, true);
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->name(_document, String::ucompose("%1: %2",
Glib::ustring(_("_Redo")),
Glib::ustring((*_getRedoEvent())[_columns.description])));
} else {
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->name(_document, _("_Redo"));
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->sensitive(_document, false);
}
}
}
EventLog::const_iterator
EventLog::_getUndoEvent() const
{
const_iterator undo_event = (const_iterator)NULL;
if( _curr_event != _event_list_store->children().begin() )
undo_event = _curr_event;
return undo_event;
}
EventLog::const_iterator
EventLog::_getRedoEvent() const
{
const_iterator redo_event = (const_iterator)NULL;
if ( _curr_event != _last_event ) {
if ( !_curr_event->children().empty() )
redo_event = _curr_event->children().begin();
else {
redo_event = _curr_event;
++redo_event;
if ( redo_event->parent() &&
redo_event == redo_event->parent()->children().end() ) {
redo_event = redo_event->parent();
++redo_event;
}
}
}
return redo_event;
}
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :